Eoy stone



(No Model.)

R. STONE.

HYDRAULIC EXGAVATING MAGHINE. No. 281,415. Patented July 17, 1883.

UNITED STATES PATENT OFFICE.

ROY STONE, OF NEWV YORK, N.

HYDRAULIC EXCAVATlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 281,415, dated July1'7, 1883.

Application filed October 20, 1882.

To all whom it may concern.-

Be it known that I, ROY STONE, of the city and State of New York, haveinvented an Improvement in Hydraulic Excavating-Maghines, of which thefollowing is-a specifica- In Letters Patent No. 224,809, granted to me,there is an induction-tube in which a current is set up by water issuingfrom a j et-nozzle in an upward direction, and a boring-jet in front ofthe end of the tube.

My present invention is for producing, the required current in theinduction-tube and for preventing the nozzle obstructing the freepassage through that tube of any substances that may enter the same;also, for allowing the induction-tube to be used in shallow water, andfor directing the boring-jet upon the earth, sand, or other loosematerial to the best ad vantage, so that such materials will be taken upby the flow of water.

In the drawings, Figure 1 is a section of the lower end of theinduction-tube, longitudinally. Figs. 2 and 3 are end views, indicatingthe places where the jet-tubes are located.

The induction-tube a is to be of a suitable length and diameter,according to the use to which it is applied, and it is to be suspendedand moved in any of the modes shown. in my previous applications orpatents. Instead of the lower end of the tube being of the same diameteras the body, I make the same flaring,

in order to furnish the required space for the introduction of one ormore jet-nozzles, 12, around its periphery, which nozzles are curvedaround from the supply-pipe c, and deliver the water in a powerfulupwardly-acting jet within the induction-tube a. The boring-jet nozzle 6is usually upon the same pipe, 0, at the bend or return-nozzle, so as todeliver a portion of the water against the bank of sand, gravel, orother material to loosen the same.

The advantages of this construction are many:

First. The two jet-nozzles are upon one water-supply pipe that is notnecessarily attached to the induction-tube, and hence may be moved inits relative position to the induction-tube. It may be at the bottom ormore or less at the side of the end of the induction-tube.

(No model.)

Second. Two or more of these water-pipes, 5o with the two j et-nozzles,may be used, as shown in Fig. 2, so as to loosen and take up thematerial at opposite parts of the flaring mouth.

Third. I11 case of any large lumps of earth or sandy material beingdrawn into the flaring 5 5 mouth, they will be acted upon and furtherdisintegrated by the upwardly-acting jet or jets.

Fourth. The jet-nozzles can be used with induction-tubes of varioussizes without mate- 6o rial change, and simply require to be strapped orotherwise held in place at the end of the tube.

Fifth. The flaring mouth allows the jet nozzle or nozzles to be hookedupon its edge, and where the water is not as deep as the width of themouth the induction-current will still be set up when the nozzles areplaced so as to act below the water-level.-

Sixth. One or more induction-nozzles can be connected with the end ofthe inductiontube, as seen in Fig. 3, with a separate boringjet nozzle,the nozzles in all instances not obstructing the ingress of materials tothe induction-tube.

I do not claim'an induction-tube having a curved or hopper-shaped endand a jet-tube, as thesehave been used; but in practice there isconsiderable loss of power in forcing the a water, sand, and othermaterials around the curve.

I do not claim an ejector-tube and an annular discharge for water underpressure, as the same has been used; but, the opening being very longand narrow, there is considerable friction to retard the flow. Neitherdo I claim an induction-tube with a curved shoe at the lower end that islarger than the tube, and in which there is a jet-tube. In this case thejet of water, instead of acting in line with the eduction-tube, isprojected against the curved shoe, and. fails to induce a powerfulupward current, because considerable of the force of the jet is lost bystriking against the side of the shoe. Neither do I claim aneduction-tube with a flaring end and a jet-tube attached by a swivel, soas to be moved and guided by handles or cross-bars, as this is liable tobe misplaced when in use. In my improvement thejet-nozzle is fixed inthe proper position, tube and one or more induction and boring and theinduction-tube and jet-nozzle become nozzles, of an induction-tubehaving a flaring one implement, to be handled as a whole. lower end,substantially as. set forth.

I claim as my invention Signed by me this 14th day of October, A. 5 1.The combination, with a straight induc- D. 1882.

tion-tube with a flaring inlet end, of a Water- T supply pipe, aninducing j et-tube passing ROY STOL around the lower end of theinduction-tube, \Vitnesses: and aboring jet tube, substantially as setforth. G120. T. PINCKNEY, 1o 2. The combination, with the water-supplyXVILLIAM G. Mo'rT.

